Apophis asteroid passes close to Earth as missions prepare observations
Updated
Updated · The Irish Times · May 7
Apophis asteroid passes close to Earth as missions prepare observations
12 articles · Updated · The Irish Times · May 7
On 13 April 2029, Apophis will fly within 32,000km of Earth, close enough to be seen unaided, while Nasa's OSIRIS-APEX and ESA's Ramses study it.
Scientists say the asteroid poses no impact threat and will provide a rare chance to watch how Earth's gravity changes an asteroid's shape, surface and motion.
Discovered in 2004, Apophis briefly reached level 4 on the Torino Scale before further data ruled out collision risk, making the flyby a planetary-defence and public-communication test.
Apophis will survive its 2029 flyby, but how might Earth’s gravity reshape it, potentially creating new risks for the future?
With private missions now targeting Apophis, how will humanity coordinate its response if a real asteroid threat is ever discovered?
New observatories are finding thousands of asteroids. How many more 'Apophis-level' close encounters are we simply not yet aware of?
The 2029 Apophis Flyby: Unprecedented Research, Planetary Defense, and Global Observation
Overview
In April 2029, asteroid (99942) Apophis will make an exceptionally close approach to Earth, offering a rare and exciting opportunity for scientific observation. Researchers are using ground-based radar images to develop detailed 3D models of Apophis, helping scientists understand its size, shape, and structure. This close encounter is not only a unique celestial event but also important for planetary defense, as knowing an asteroid’s physical properties is crucial for modeling potential impact scenarios. The event will bring together international missions and public engagement, making it a landmark moment for both science and citizen participation.